Furnace for heating metal bars or sheets.



No. 669,265. Patented Mar. 5. [90L E., NOBTON'&."H. W. ROBINSON.

FURNACE FOB H EATJNGMETALBARS 0B SHEETS.

(Applicltion fil ed Oct. 22, 1900.)

I v(No onet) 2 Shaets$heet I Q Q I T4 m I I I f? 1 lg jcsss; I I m v v JNVI-ZI'NITOFDPS' No. 669,265. Patented Mar. 5, 1901. E. NORTON -& H. w. nosmson.

FURNACE FOR HEATING METAL BARS 'OR SHEETS.

(Application filed Oct. 22, 1900.) (No Model.) 2 Sheats8hoet 2.

'JVl/JENTORS:

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NITED STATES. PATENT FFI EDVV'IN NORTON AND HURD WV. ROBINSON, OF MAYWOOI), ILLINOIS, ASSIGNORS TO NORTON BROTHERS, OF CHICAGO, ILLINOIS.

FURNACE FOR HEATING METAL BARS OR SHEETS.

SPECIFICATION forming part of Letters Patent No. 669,265, dated March 5, 1901.

Application filed October 22, 1900- Serial No. 33,952. (No model.)

To rtZZ whont it may concern: side instead of at its front, as in the furnace Be it known that we, EDWIN NORTON and of said Patent No. 608,264. The faces of the lIURD \V. ROBINSON, citizens of the United radial slots or pockets in the rotary holder 7 States, residing in Maywood,in the county of or in its radial arms are preferably beveled 5 Cook and State of Illinois, have invented a to facilitate the endwise entry of the bars or new and useful Improvement in Heatingsheets into the same and to cause the bars Furnaces for Heating Metal Bars or Sheets or sheets to have only a narrow or limited Preparatory to Rolling the Same, of which bearing-surface onthe holder at their oppothe following is a specification. site ends or edges. The rotary holder is pref- IO Our invention relates to improvements in erably constructed ofapairofcast-iron wheels furnaces for heating metal bars or packs of or radial-arm spiders, the wheels or spiders sheets preparatory to rolling the same into being placed at a suitable distance apart on thin sheets for tin'plate or other purposes, their shaft, according to the length of the bars and more particularly to improvements upon or sheets to be operated upon. The pair of 15 the heating-furnace having a rotary rack or radially slotted wheels or spiders of the holder for the bars or sheets patented in Letholder thus serve to carry or support the bars ters Patent No. 608,264, of August 2, 1898. or sheets throughout their entire course in In said previously-patented furnace the door the furnace and prevents their edges from for admitting and removing the bars orsheets resting uponor scraping against the bottom 20 is at the front side of the furnace parallel to of the furnace and at the same time gives a the shaft or axes of the rotary holder, and better opportunity for the heat, flame, and the receptacles for the bars or sheets in the products of combustion to envelop and act rotary holder are open to receive them at the uniformly upon the bars or sheets as they ends of the radial arms forming said recep are carried around by the rotary holder. 25 taclcs, so that as the bars or sheets are being In the drawings l'orminga part of this specicarried around in the furnace their edges fication, Figure l is a central vertical longirest and scrape against curved guides on the tudinal section of a furnace embodying our bottom of the furnace, which in practical opinvention, showing the wheel .or spider in eration may sometimes tend to bend, distort, elevation. Fig. 2 is a vertical cross-section 8o 0 or injure the edges of the heated sheets and on line 2 2 of Fig. l, and Fig. 3 is a detail also increases the friction and power required horizontal cross-sectional view taken through to turn the rotary rack or holder. the doors on line 3 3 of Fig. l.

The object of our invention is to overcome In saiddrawings, A represents the furnace, these objections and at the same time to prohavingaheating-chamber a, tire box or cham- 5 vide a simple and durable construction of her a, grate 0, ash-pit a fuel-door 0. and

rotary holder which will successfully withfine a leading to the smoke-stack. The rostand the heat to which it is constantly subtary rack or holder comprises a pair of slotjected in the furnace. ted wheels or spiders B B, secured to a shaft Our invention consistsin the means We etn- B, which extends through the sides A A of 4o ploy to practically accomplish these results the furnace and is journaled in suitable bearthatis to say, itconsists ofarotary holder furings C 0 outside thereof. The wheels or nished with a series of pockets, slots, or recepspiders B B are furnished each with a series of tacles having supports for the edges and sides pockets, receptacles, or slots 1), closed at their of the bars or sheets to bear against, so that outer ends I), as well as at their inner ends 19 5 45 the slots, pockets, or receptacles are open for so that the closed ends of these slots or pockthe admission or withdrawal of the sheets or ets may afford support or stops for the edges of packs only at their endsthat is, at the end the bars or sheets to bear-against as the holder of the rotary holder as contradistinguished revolves. The closedpocketsorslots b b each from the peripheryin combination with a have beveled faces 19 b to facilitate the end- 50 furnace having a door or opening for admiswise insertion of the bars or packs of sheets sion or withdrawal of the sheets or bars at its into them through the door-opening D in the side of the surface. The door-opening D is at one side of the shaft B and preferably on a level therewith,so that the pockets,slots, or receptaclesbb in the wheels or spiders B B will be horizontal at the time the bars or sheets are to be insert ed therein. To facilitate the insertion of the bars or sheets into the slots or receptacles b b of the holder, the furnace is provided at its door-opening with a feed-table D. The door-opening is closed by a sliding door D I The heated bars or sheet-s may be withdrawn from the furnace and holder through the door-opening D; but we prefer to provide the furnace with a door-opening cl, table d, and door d on its opposite side A and in line with those on the feed side, at which the heated bars or sheets may be taken out of the furnace.

The faces 17 b of the slots, pockets, or receptacles I) support the sides of the bars or sheets, the outer ends I) of said pockets sup.- port the outer edges of the bars or sheets, and the inner ends Z) of said pockets support. the inner edges thereof as the holder rotates.

The holder B or its shaft B is given a slow intertnittentorstep-by-steprotary movement from or through the driving-shaft F, which is furnished with a worm f, meshingwith a gearf on the shaft B of the holder.

'lwo slots or receptacles are preferably formed parallel to each other in each of the radial arms of the spiders B, as the arms may thus be made individually largerand stronger and better adapted to withstand the heat of the furnace.

We claim- 1. In a sheet or bar heating furnace, the combination with the heating-chain her of the furnace, of a rotary holder mounted therein on ashaft extending through the sides of the furnace, and provided with a series of slots or receptacles closed at theirin-ner and outer ends or edges to form supports for the edges of the bars or sheets as the holder revolves, said furnace being provided with a door at the side thereof through which said shaft eX- tends for the insertion of the bars or sheets into the furnace and holder, substantially as specified.

2. The combination with a furnace-chamher, of a rotating holder therein furnished with a seriesof pockets or receptacles having supports for the sides and edges of the bars or sheets as the holder revolves, substantially as specified.

3. The combination with a furnace-chamher, of a rotating holder therein furnished with a series of pockets or receptactes having supports for the sides and edges of the bars or sheets as the holder revolves, said furnace having a door in its side for the insertion of the bars or sheets in a direction parallel to that of the axis of said rotating holder, substantially as specified.

4. The combination with a furnace-chamber, of a rotary sheet or bar holder therein, consisting of a pair of Wheels or spiders furnished each with a series of slots closed at their outer ends, and a door at the side of the furnace, substantially as specified.

5. The combination-With a furnace-chamber, of a rotary sheet or bar holder therein, consisting of a pair of wheels or spiders furnished each with a series of slots closed at their outer ends and adoor at the side of the furnace, said door being provided with a feedtable, substantially as specified.

The combination with a furnace-chamber, of a rotary sheet or bar holder therein, consisting of a pair of wheels or spiders furnished each with a series of slots closed at their outer ends and a door at the side of the furnace, said slots having beveled faces, substantially as specified.

7. The combination with a furnace having opposite sides A A furnished each with a door through the same of a rotary holder comprising a shaft 15' and a pair of slotted wheels or spiders B B having the slots thereof radially located, and each slot thereof being in turn brought opposite said doors as the holder rotates, whereby the sheets or bars may be passed in at one side, and out at the other side of the furnace through the rotary holder, substantially as specified.

EDWIN NORTON. HURD WV. ROBINSON. Witnesses:

EDMUND ADCOOK, H. M. MUNDAY. 

